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Ultraviolet in stereo: Photoelectric effect

Date: Jul 1, 2018

Author: David Bradley

Ultraviolet can assist understanding the photoelectric effect whereby a photon incident on a material causes the ejection of an electron from that material. Researchers in Swizterland have now used attosecond laser pulses to measure the time evolution of this effect in molecules and so can deduce the exact location of such photoionization events.

Read More thumbnail image: Ultraviolet in stereo Photoelectric effect

Journal Highlight: Synthesis of antimony trioxide crystals with various morphologies and their UV‐Vis‐NIR reflectance performance

Date: Jun 11, 2018

Author: spectroscopyNOW

Antimony trioxide crystals with various morphologies have been synthesized and characterized and the UV‐Vis‐NIR reflectance performances of the different shaped crystals were evaluated.

Read More thumbnail image: Journal Highlight Synthesis of antimony trioxide crystals with various morphologies and their UVVisNIR reflectance performance

Unravelling spider silk: UV technique weaves the clues

Date: Jun 1, 2018

Author: David Bradley

Scientists at RIKEN in Japan have used far-UV circular dichroism spectroscopy and other techniques to reveal the underlying mechanism of spider silk formation. The research could help materials scientists weave biomimetic versions of this natural material which is both stronger and more flexible weight-for weight than steel.

Read More thumbnail image: Unravelling spider silk UV technique weaves the clues

Journal Highlight: Surface molecular imprinting polymers based on ZnO quantum dots as fluorescence sensor detection of diethylhexyl phthalate with high sensitivity and selectivity

Date: May 7, 2018

Author: spectroscopyNOW

Molecularly imprinted polymers with zinc oxide quantum dots have been prepared for the selective fluorescence detection of diethylhexyl phthalate in environmental samples.

Read More thumbnail image: Journal Highlight Surface molecular imprinting polymers based on ZnO quantum dots as fluorescence sensor detection of diethylhexyl phthalate with high sensitivity and selectivity

Earthly delights: Ultraviolet quantum dots

Date: May 1, 2018

Author: David Bradley

Can scientists use earthworms to make quantum dots? That is a question answered in the positive by researchers from Iran who have used ultraviolet-visible spectroscopy and photoluminescence analysis to confirm the unique absorption and luminescence properties of their products.

Read More thumbnail image: Earthly delights Ultraviolet quantum dots

Journal Highlight: Novel optical absorption spectra of divalent neodymium (Nd2+) in bromide and iodide hosts

Date: Apr 9, 2018

Author: spectroscopyNOW

The electronic spectra of Nd2+ ions in bromide and iodide hosts have been measured for the first time and the effects of the halide ions have been simulated successfully.

Read More thumbnail image: Journal Highlight Novel optical absorption spectra of divalent neodymium Nd2 in bromide and iodide hosts

Bend me, shape me: UV me

Date: Apr 1, 2018

Author: David Bradley

Ultraviolet-visible (UV-Vis) spectroscopy and other techniques have been used to investigate a mechanically robust conductive coating that can maintain performance under heavy stretching and bending.

Read More thumbnail image: Bend me shape me UV me

Journal Highlight: Rapid and sensitive colorimetric detection of ascorbic acid in food based on the intrinsic oxidase-like activity of MnO2 nanosheets

Date: Mar 12, 2018

Author: spectroscopyNOW

A colorimetric sensor for the rapid, selective detection of ascorbic acid in aqueous solutions such as fruit, juice and pharmaceutical samples is based on single-layered MnO2 nanosheets and 3,3',5,5'-tetramethylbenzidine.

Read More thumbnail image: Journal Highlight Rapid and sensitive colorimetric detection of ascorbic acid in food based on the intrinsic oxidase-like activity of MnO2 nanosheets

Table-top electron probe: Extreme UV

Date: Mar 1, 2018

Author: David Bradley

Researchers in Germany have developed new laser technology that can generate attosecond bursts of high-energy photons with unprecedented intensity. The technology allows them to watch observe the interaction of multiple photons from a single pulse with electrons in the inner shell of an atom.

Read More thumbnail image: Table-top electron probe Extreme UV

Journal Highlight: Fluorescence lifetime and UV-vis spectroscopy to evaluate the interactions between quercetin and its yeast microcapsule

Date: Feb 5, 2018

Author: spectroscopyNOW

A fluorescence lifetime technique has been developed to evaluate the structure of quercetin during encapsulation in a vector capsule that has already proven efficiency, namely yeast cells.

Read More thumbnail image: Journal Highlight Fluorescence lifetime and UV-vis spectroscopy to evaluate the interactions between quercetin and its yeast microcapsule
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